break large String into small Strings

Question

i have a large string which contains Id's example :

HD47-4585-GG89

here at the above i have an id of a single object but sometimes it may contain id's of multiple objects like this :

HD47-4585-GG89-KO89-9089-RT45

the above haves ids of 2 objects now i want to convert the above string to an array or in multiple small Strings something like :

id1 = HD47-4585-GG89

id2 = KO89-9089-RT45

every single id haves a fixed number of characters in it here its 14 (counting the symbols too) and the number of total id's in a single String is not determined

i dont know how to do it any one can guide me with this ?

i think all i have to do is clip the first 14 characters of string then assign a variable to it and repeat this until string is empty

i'm not a java guy i have to do it for a server side code thats why i dont know where to start @JornVernee — remy boys
– remy boys, Commented Aug 1, 2016 at 16:09
i got this api s = s.substring(0, Math.min(s.length(), 14)); for trimming the first 14 characters but how to deal with this - symbol which is combining two id's — remy boys
– remy boys, Commented Aug 1, 2016 at 16:14
This will help you : stackoverflow.com/questions/9276639/… — sterin jacob
– sterin jacob, Commented Aug 1, 2016 at 16:18

Jorn Vernee · Accepted Answer · 2016-08-01 16:22:25Z

2

You could also use regex:

String input = "HD47-4585-GG89-KO89-9089-RT45";

Pattern id = Pattern.compile("(\\w{4}-\\w{4}-\\w{4})");
Matcher matcher = id.matcher(input);

List<String> ids = new ArrayList<>();

while(matcher.find()) {
    ids.add(matcher.group(1));
}

System.out.println(ids); // [HD47-4585-GG89, KO89-9089-RT45]

See Ideone.

Although this assumes that each group of characters (HD47) is 4 long.

edited Aug 1, 2016 at 16:22

answered Aug 1, 2016 at 16:16

Jorn Vernee

34.3k5 gold badges84 silver badges99 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

baao · Accepted Answer · 2016-08-01 16:34:29Z

1

Using guava Splitter

class SplitIt
{
    public static void main (String[] args) throws java.lang.Exception
    {
        String idString = "HD47-4585-GG89-KO89-9089-RT45-HD47-4585-GG89";

        Iterable<String> result = Splitter
                .fixedLength(15)
                .trimResults(CharMatcher.inRange('-', '-'))
                .split(idString);
        String[] parts = Iterables.toArray(result, String.class);
        for (String id : parts) {
            System.out.println(id);
        }
    }
}

edited Aug 1, 2016 at 16:34

answered Aug 1, 2016 at 16:27

baao

73.6k18 gold badges152 silver badges209 bronze badges

Comments

Madgr · Accepted Answer · 2016-08-01 16:38:07Z

1

StringTokenizer st = new StringTokenizer(String,"-");

while (st.hasMoreTokens()) {

   System.out.println(st.nextToken());

}

these tokens can be stored in some arrays and then using index you can get required data.

answered Aug 1, 2016 at 16:38

Madgr

75 bronze badges

1 Comment

Jorn Vernee Over a year ago

"StringTokenizer is a legacy class that is retained for compatibility reasons although its use is discouraged in new code."

Collectives™ on Stack Overflow

break large String into small Strings

3 Answers 3

Comments

Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related